Heater-car.



C. A. MOORE.

HEATER CAR.

APPLICATION FILED MAR. 14, I912. RENEWED MAY I8. I918.

1,290,635. Patented Jan. 7,1919.

UNITED STATES PATENT. FFICE.

CHARLES A. MOOREOF ST. PAUL, MINNESOTA.

HEATER-CAR.

Application filed March 14, 1912, Serial No. 683,681.

To all whom it may concern:

Be it known that I, CHARtEs A. MOORE. a citizen of the United States residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Improvement in Heater-Cars, of which the following is a specification.

My invention relates to improvements in heater cars which use in transporting perishable commodities requiring protection from heat in summer and cold in winter. Its primary object is to provide eflicient and efiective means for heating and ventilating an insulated or uninsulated car by displacing cold foul air with Warm and substantially pure air. I-Ieretofore it has been found in practice that a comparatively small oil heater is sufficient to sustain heat of a desired temperature in a car of the class stated but that sucl1 heater unless of large capacity is not sufliclent to heat the car sufliciently at the start and if of suflicient capacity it is not entirely practicable for transportation purposes owing to the large space required and the attention necessary in regulating the heat after the heater has been started. With my invention I overcome this objection by providing means for preheating the car and after the car has been sufliciently heated at the start the heater employed is removed and a small permanent heater left to sustain the temperature at an efiicient and efiective polnt.

Further in the use of heaters for cars of the class described much annoyance and damage has been sustained by explosions caused through the collection of gases in the heater chamber. This has especially been encountered where oil heaters have been employed. Another object of my invention is to overcome this objection which I accomplish in a very simple and effective manner.

In the accompanying drawings forming part of this specification, Figure 1 is a transverse section in elevationof an ordinary 1nsulated freightcar body for carrying perishable lading showing. my invention applied thereto; Fig. i vention partly broken away and in section and Fig. 3 is a section taken upon the line XX of Fig. 2.

In one form of my invention such as illustrated in Fig. 1 a heater box A is provided beneath the car body B, said box being adapted to receive an oil heater C of ordinary type for furnishing heat. A heating Specification of Letters Patent.

are especially adapted for may be in the sides,

contaminating with any of the 2 is a side elevation of my m- I cold air from Patented Jan. *7, 1919. Renewed May 1a, 1918. Serial No. 235,393]

drum D is connected to the heater and passed up into the car its upper end't-ermmatmg a short distance below the ceiling 2 and being closed at its upper end except for the smoke pipe 3 which is of less diameter than the drum and leads upwardly through the roof of the car for expelling smoke and gases from the heater outside. A thimble 4c is placed around the drum in the floor of the car to reduce danger from fire and a guard 5 is placed around the drum and extends up to the loading line in the lading chamber. By this construction heat from smoke and gases in the drum is radiated into the car. A fresh air heating pipe E passes through the floor of the heater box and upwardly through the heating drum above the heater and thence rises through the drum and into the top of the car above the load line.

The car body consists of the usual outer siding 6, frame 7 and insulation 8 and is also provided with an inner lining 9 separated from the frame 7 and insulation 8 by the air space 10. This air space 10 which end and floor of the car as illustrated opens into the lading chamber near the roof of the car and near the floor through ports 11 also into the heater box through the passage 12, thus forming a communicating passage for vitiated air from the lading chamber into the heater box. The ports 11 need not be employed. This vitiated air supplies oxygen to the stove through the draft openings 13 and that portion of the vitiated air which does not pass into the stove is carried off through the smoke pipe 3 by means of a branch 14 which is connected to said smoke pipe and depends through the wall of the car to the lower portion of the space in the heater box.

In the operation of the car fresh warm air passes up into the top of the lading chamber through'the pipe E the drum D furnishing efficient and effective means for heating the fresh air in said pipe without vitiated air V The vitiated the'car passes down through the space 10 and passage 12 into the'heater box and that portion which is not needed for operating the stove is drawn out of the car by means of the smoke pipe 3 through the branch 14. It will be noted that there or gases from the car or stove.

is free circulation of the air and that there fiopies ot/this patent may be obtained. for

has frequently been fatal to the successful operation of cars.

These explosions have occurred some times; through slamming of the door of the car causing compression of an gases that may have collected in the heater box. This defect is entirely overcome by my improved construction. I The pipe 14 asslsts in insulating the wall of the car.

The heater G employed is of sutlicient size to maintain heat in the car after it has been raised to the desired temperature but when it is desired to heat the car quickly and the outside temperature is low the size of the heater C may not be suflicient to accomplish this result and I employ in combination with my-heater temporary means for preheating the car to a point where the permanent heater C will afterward maintain the temperature. To accomplish this result a stove F is placed in the car and its smoke pipe 15 connected to the elbow 16 in the upper end of the drum D. This stove is operated until the walls and lading space in the car are warm when it is disconnected, the shutter 17 automatically closing the elbow when the pipe 15 is removed. This shutter is hinged at 18 to the elbow and carries a weight 19 (see Fig. 2) in its free end which tends to hold the cover closed over the elbow; When desired the branch 14' can be made to egress directly outside of the car without connecting it to the smoke .P P

In Fig. 2 I have shown my improved heater on a larger scale aridhave shown it constructed so that it may be placed in the car without the use of a heater box. In

this construction it is not necessary to have a lining in the car or any passage in the floor or walls except where the fresh air inlet pipe passes into the car. 20 represents the floor of the car on which theheater C is placed and 21 represents the roof of the car'through which the smoke pipe 3 passes. The drum D and pipe 14 may be fastened to the side of the car by any ordinary means not shown and the heater operated in any ordinary form of provision car without the. use of the heater box or insulated walls. '-Inthe construction illustrated it is further not necessary to employ a guard such as the element 5 shown in Fig. 1. The circulation of air is the same as in the construction employed in QEi'g. 1. .Fresh cold air passes upwardly through, the pipe E through the-fioor-20 of substantially five .cents each, "by addressing the washingtomll. G. r

the car and is heated by the drum and passes into the top of the car. Vitiated cold air is drawn off from near the floor of the car through the branch 14 and smoke pipe 3. That portion of the vitiated cold air not supplied to thestove through the draft passages 13 is drawn off by the branch 14 andsmoke pipe 3 and expelled into the outer atmosphere.

While I have treated-the heater box as a separate adjunct to the provision chamber in the above description, I intend the terms car, car body, lading chamber. and provision chamber to be interpreted as meaning to include the said box as part of the same element and not separate and distinct. I also intend that while the branch 14 is defined as being directly connected with the reduced portion of the drum D it may be connected with any upper portion of the drum within the spirit of the invention.

In accordance with the patent statutes I have described the principles of operation of my invention together with the apparatus which I now consider to represent the best embodiment thereof but I desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses otherthan those above set forth within the scope of the following claim.

Having described'my inventlon, what I claim as new .and desire to protect by Letters']?a te11tis: I

The combination of a car body forming a lading chamber therein, a heater having an enlarged drum rising into said lading chamber, said drum being reduced at a point adjacent the top of the lading chamber to form an egress pipe through the walls of the upper portion of the car to the outer atmosphere, a fresh air duct leading through the walls of the lower portion of the car body and passing upwardly through the enlarged portion of saiddrum to be heated thereby and egressing into the upper portion ofthe lading chamber and an elongated pipe opening at one end at a point slightly removed from the bottom of the lading chamber and at its other end into the re- -duced portion of said drum, whereby cold vitiated air and gases are conducted to the outer atmosphere.

In testimony name to this specification, in the-presence of two subscribing witnesses.

- Witnesses: 1

H. L. FISCHER, G. DEEBAGH.

Commissioner of Patents,

whereof, I have signedjny CHARLES A; Moons; 

